Production of a banana (Musa cavendishii) extract containing no polyphenol oxidase by ultrafiltration
✍ Scribed by Tanada-Palmu, Patrícia; Jardine, José; Matta, Virginia
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 115 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0022-5142
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✦ Synopsis
The objective of this research was the production of a banana extract containing no polyphenol oxidase by ultraültration. Banana juice was extracted after inhibition of polyphenol oxidase using a solution containing 0.15 g per 100 ml of sodium metabisulphite and 1 g per 100 ml of ascorbic acid in distilled water to avoid initial browning. Polyphenol oxidase was then retained by ultraültration using polysulphone membranes with a cut-oþ of 20 kDaltons. Two transmembrane pressures, 600 and 800 kPa, were used but 600 kPa was preferred because of the more stable permeate ýux which decreased less with time and concentration of extract.